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If the compound and simple interest of a...

If the compound and simple interest of a certain principal in 2 years be Rs. 40.80 and Rs. 40 respectively, then find the principal and the rate of interest in percent per annum.

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The correct Answer is:
Rs. 500,4%
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CALCUTTA BOOK HOUSE-COMPOUND INTEREST-LONG ANSWER TYPE QUESTIONS
  1. Find the difference between compound and simple interest of Rs. 16000 ...

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  2. At the rate of 4% compound interest per annum the difference between c...

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  3. If the compound and simple interest of a certain principal in 2 years ...

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  4. If the ratio of the compound interest in 3 years and the simple intere...

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  5. At the rate of 5% compound interest per annum, in how many years will ...

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  6. In how many years will the principal Rs. 800 amount of Rs. 882 at the ...

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  7. In how many years will Rs. 64000 amount to Rs. 68921 at the rate of 5%...

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  8. Ramen obtained simple interest Rs. 1600 by depositing a sum of money ...

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  9. What will be the compound interest of Rs. 12000 in 2 years at the rate...

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  10. What will be the compuound interest of Rs. 1000 in 18 months at the ra...

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  11. What will be the compound interest of Rs. 320000 in 1 year at the rate...

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  12. Shyam deposited Rs. 7500 for 6 months in a bank. If the rate of compou...

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  13. If the intertest compounded at the interval of 6 months and the rate o...

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  14. The population of a city increases by 5% per annum. If the present pop...

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  15. The population of a town increases by 15% per annum. If the population...

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  16. The present value of a car is Rs 400000. If the value of the car decre...

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  17. The length of a tree increases by 1/8 parts of it every year. If the p...

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  18. The population of a town was 62500 before 2 years. Due to migration th...

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  19. If the production of cars of an industry rises from 40,000 to 48,400 i...

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  20. The value of a new car sis rs. 360000. If the value of the car decreas...

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